Datasheet4U Logo Datasheet4U.com

MAX1954A - Current-Mode PWM Buck Controller

General Description

The MAX1954A synchronous current-mode, pulsewidth modulation (PWM) buck controller is pin compatible with the popular MAX1954 and is suitable for applications where cost and size are critical.

The MAX1954A operates from an input voltage range of 3.0V to 13.2V, independent of the IC supply.

Key Features

  • foldback current limiting that greatly reduces input current and component power dissipation during output overload or short-circuit conditions. The compensation and shutdown control (COMP) input, in addition to providing compensation to the error amplifier, can be pulled low to shut down the converter. An input undervoltage lockout is provided to ensure proper operation during power sags to prevent the external power MOSFETs from overheating. Internal digital soft-start is included to reduce in.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
MAX1954 Low-Cost / High-Frequency / Current-Mode PWM Buck Controller Maxim
MAX195 16-Bit / 85ksps ADC with 10A Shutdown Maxim
MAX1951 2A PWM Step-Down DC-to-DC Regulators Maxim
MAX1951A PWM DC-DC Step-Down Regulator Maxim Integrated Products
MAX1952 2A PWM Step-Down DC-to-DC Regulators Maxim

Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX19516 100Msps ADC
MAX19005 200Mbps ATE Drivers/Comparators
MAX1920 400mA Step-Down DC-DC Converters
MAX1921 400mA Step-Down DC-DC Converters
MAX1928 PWM Step-Down DC-DC Converters

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
MAX1954A 19-3154; Rev 1; 5/05 EVAALVUAAILTAIOBNLEKIT Low-Cost, Current-Mode PWM Buck Controller with Foldback Current Limit General Description The MAX1954A synchronous current-mode, pulsewidth modulation (PWM) buck controller is pin compatible with the popular MAX1954 and is suitable for applications where cost and size are critical. The MAX1954A operates from an input voltage range of 3.0V to 13.2V, independent of the IC supply. The output voltage is adjustable down to 0.8V. The IC operates at a fixed 300kHz switching frequency and provides up to 25A of output current with efficiency up to 95%. This controller has excellent transient response resulting in smaller output capacitance.